Answer:
a. 11 m/s at 76° with respect to the original direction of the lighter car.
Explanation:
In this exercise, since both cars make a right angle, let's assume that the lighter car only has a horizontal velocity component (vx) and that the heavier one only has a vertical velocity component (vy). The final velocities for both components for the system can be determined as:
Assume that the lighter car has a 1kg mass and that the heavier car has a 4 kg mass.
The magnitude of the final velocity of the wreck can be found as:
The final velocity has an intensity of roughly 11 m/s
As for the angle, it can be determined in respect to the lighter car (x axis) as follows:
Therefore, the wreck has a velocity with an intensity of 11 m/s at 76° with respect to the original direction of the lighter car.
Answer:
So the induced emf is
Explanation:
Since there is a variation in the current flow on the coil , it means that the magnetic field in the brain would also vary causing an emf to be induced
and from the question the current varies from zero to peak so would the magnetic field vary from zero to peak(i.e from 0 to 0.40T)
This induced emf is mathematically represented as
Where dt =
where
and
So dt
A is the area of the coil mathematically evaluated as
A =
Where
Substituting 2.2cm = for d
Then
Now
The answer to this question is A.
Answer:
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